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Answer: 25 ºC = 298 K
Let's call the parallel sides A and B, and the distance between them as H. The area of the trapezium, or K, is (A+B)H/2. K = (A+B)H/2
Use this equation to convert Kelvin to degrees Celsius/Centigrade: [°C] = [K] - 273.15
A = P*(1+R/100)T Where A = amount P = Principal R = Interest Rate (in percentage), and T = Time Since R and T are known, you can calculate (1+R/100)T = k, say. Then A = P*k so that P = A/k
You cannot calculate the angle using tangent: you need to use the inverse function: arctangent. The answer will be an angle, x, in the principal range (-90, 90) degrees. But it could be any (x + 180*k) for any integer k.
Oxygen is a gas at 298 K.
298 degrees Fahrenheit = 420.93 K.
At 101.3 kPa and 298 K, the element present is likely to be oxygen (O2) due to its high natural abundance in the atmosphere and its physical properties at that temperature and pressure.
Using the ideal gas law, we can calculate the new volume of the balloon. Given that the initial volume is 0.75 L, the initial temperature is 25°C (298 K), and the final temperature is -100°C (173 K), we can use the equation (V1/T1) = (V2/T2) to find the new volume. Plugging in the values, we get V2 = (0.75 L * 173 K) / 298 K ≈ 0.44 L.
The average velocity of hydrogen molecules at 298 K can be calculated using the root mean square velocity formula, v = √(3kT/m), where k is the Boltzmann constant, T is the temperature in Kelvin, and m is the mass of a hydrogen molecule. The average velocity of hydrogen at 298 K would be around 1926 m/s.
The value of Kw (ion product of water) at 298 K is approximately 1.00 x 10^-14.
Aluminum is a metallic substance. It is solid at 298 K. It is silvery in color.
The direction of the reaction is favored when the Gibbs free energy change (ΔG) is negative. You can calculate ΔG using the equation ΔG = ΔH - TΔS, where T is the temperature in Kelvin. At 298 K, the sign of ΔG will depend on the values of ΔH and ΔS. If ΔG < 0, the reaction is favored in the forward direction.
Carbon dioxide (CO2) is formed from its elements (carbon and oxygen) by an exothermic reaction at 298 K and 101.3 kPa.
Answer: 25 ºC = 298 K
An exothermic reaction is one where heat is released to the surroundings. An example of an exothermic reaction equation at 298 K is: 2H2(g) + O2(g) -> 2H2O(l) + heat
Let's call the parallel sides A and B, and the distance between them as H. The area of the trapezium, or K, is (A+B)H/2. K = (A+B)H/2